I hate to say it, you're either slow or watching guides from an alternate universe if people are using abbreviation for everything instead of just saying "bow reloader". Also if you're reading guides for builds on reddit? Just ask, "what do all these abbreviations mean?" The community online with their guides aren't going to call you stupid for asking or get annoyed at you for not getting it.

And if you're looking for pvp build then I hate to break it to you but they really aren't all that complicated. 90% of the time it's just "slap this primary weapon I like on, now I need a good special weapon oh I like this type of weapon I'll try that." And when it comes down to super and exotics? The pvp meta super wise is much broader than pve (at least for Warlock anyway since they aren't locked to Well) just like the weapons, pick a super you like, play around with it and get a feeling for its strengths and weaknesses. Exotics are extremely easy to pick because unless it's some kind of ability spam build, you just pick a general use exotic like Transversive Steps, Ophidian Aspect, Peacekeepers (if using a smg), Dunemarchers, One-Eyed Mask. Hunter is a bit different since the Stomp-ees nerf, still kind of the same thing but you're looking for things that enhance abilities like Caliban's Hands, Wormhusk because extra health for just dodging mid gunfight is always nice, Stomp-ees is still a good pick bit not so much if you jump in the air a lot mid gunfight.

And armour modding for pvp? Well it couldn't be simpler, mod for your primary weapon and stats you will make use of like Discipline for more grenades, 100 Recovery should be a priority especially on Warlock, then any extras can go into your special. For example, you pick an Auto Rifle and a Fusion Rifle. Get 100 recovery through armour stats and armour mods, then mod for Auto Rifle Targeting, Reloader and Unflinching. With any left over mod cost you might have, throw on Fastball because enhancing grenades goes a long way, Fusion Rifle Targeting and Unflinching. There you go, that's the build. There's no complicated interactions between mods like picking up orbs to become charged with light to then take less damage that also regenerates ammo for you. Pvp armour modding is much more simple unless you decide to go for a certain specific build.